1 #ifndef _LINUX_ICMPV6_H 2 #define _LINUX_ICMPV6_H 3 4 #include <asm/byteorder.h> 5 6 struct icmp6hdr { 7 8 __u8 icmp6_type; 9 __u8 icmp6_code; 10 __sum16 icmp6_cksum; 11 12 13 union { 14 __be32 un_data32[1]; 15 __be16 un_data16[2]; 16 __u8 un_data8[4]; 17 18 struct icmpv6_echo { 19 __be16 identifier; 20 __be16 sequence; 21 } u_echo; 22 23 struct icmpv6_nd_advt { 24 #if defined(__LITTLE_ENDIAN_BITFIELD) 25 __u32 reserved:5, 26 override:1, 27 solicited:1, 28 router:1, 29 reserved2:24; 30 #elif defined(__BIG_ENDIAN_BITFIELD) 31 __u32 router:1, 32 solicited:1, 33 override:1, 34 reserved:29; 35 #else 36 #error "Please fix <asm/byteorder.h>" 37 #endif 38 } u_nd_advt; 39 40 struct icmpv6_nd_ra { 41 __u8 hop_limit; 42 #if defined(__LITTLE_ENDIAN_BITFIELD) 43 __u8 reserved:4, 44 router_pref:2, 45 other:1, 46 managed:1; 47 48 #elif defined(__BIG_ENDIAN_BITFIELD) 49 __u8 managed:1, 50 other:1, 51 router_pref:2, 52 reserved:4; 53 #else 54 #error "Please fix <asm/byteorder.h>" 55 #endif 56 __be16 rt_lifetime; 57 } u_nd_ra; 58 59 } icmp6_dataun; 60 61 #define icmp6_identifier icmp6_dataun.u_echo.identifier 62 #define icmp6_sequence icmp6_dataun.u_echo.sequence 63 #define icmp6_pointer icmp6_dataun.un_data32[0] 64 #define icmp6_mtu icmp6_dataun.un_data32[0] 65 #define icmp6_unused icmp6_dataun.un_data32[0] 66 #define icmp6_maxdelay icmp6_dataun.un_data16[0] 67 #define icmp6_router icmp6_dataun.u_nd_advt.router 68 #define icmp6_solicited icmp6_dataun.u_nd_advt.solicited 69 #define icmp6_override icmp6_dataun.u_nd_advt.override 70 #define icmp6_ndiscreserved icmp6_dataun.u_nd_advt.reserved 71 #define icmp6_hop_limit icmp6_dataun.u_nd_ra.hop_limit 72 #define icmp6_addrconf_managed icmp6_dataun.u_nd_ra.managed 73 #define icmp6_addrconf_other icmp6_dataun.u_nd_ra.other 74 #define icmp6_rt_lifetime icmp6_dataun.u_nd_ra.rt_lifetime 75 #define icmp6_router_pref icmp6_dataun.u_nd_ra.router_pref 76 }; 77 78 #ifdef __KERNEL__ 79 #include <linux/skbuff.h> 80 81 static inline struct icmp6hdr *icmp6_hdr(const struct sk_buff *skb) 82 { 83 return (struct icmp6hdr *)skb_transport_header(skb); 84 } 85 #endif 86 87 #define ICMPV6_ROUTER_PREF_LOW 0x3 88 #define ICMPV6_ROUTER_PREF_MEDIUM 0x0 89 #define ICMPV6_ROUTER_PREF_HIGH 0x1 90 #define ICMPV6_ROUTER_PREF_INVALID 0x2 91 92 #define ICMPV6_DEST_UNREACH 1 93 #define ICMPV6_PKT_TOOBIG 2 94 #define ICMPV6_TIME_EXCEED 3 95 #define ICMPV6_PARAMPROB 4 96 97 #define ICMPV6_INFOMSG_MASK 0x80 98 99 #define ICMPV6_ECHO_REQUEST 128 100 #define ICMPV6_ECHO_REPLY 129 101 #define ICMPV6_MGM_QUERY 130 102 #define ICMPV6_MGM_REPORT 131 103 #define ICMPV6_MGM_REDUCTION 132 104 105 #define ICMPV6_NI_QUERY 139 106 #define ICMPV6_NI_REPLY 140 107 108 #define ICMPV6_MLD2_REPORT 143 109 110 #define ICMPV6_DHAAD_REQUEST 144 111 #define ICMPV6_DHAAD_REPLY 145 112 #define ICMPV6_MOBILE_PREFIX_SOL 146 113 #define ICMPV6_MOBILE_PREFIX_ADV 147 114 115 /* 116 * Codes for Destination Unreachable 117 */ 118 #define ICMPV6_NOROUTE 0 119 #define ICMPV6_ADM_PROHIBITED 1 120 #define ICMPV6_NOT_NEIGHBOUR 2 121 #define ICMPV6_ADDR_UNREACH 3 122 #define ICMPV6_PORT_UNREACH 4 123 124 /* 125 * Codes for Time Exceeded 126 */ 127 #define ICMPV6_EXC_HOPLIMIT 0 128 #define ICMPV6_EXC_FRAGTIME 1 129 130 /* 131 * Codes for Parameter Problem 132 */ 133 #define ICMPV6_HDR_FIELD 0 134 #define ICMPV6_UNK_NEXTHDR 1 135 #define ICMPV6_UNK_OPTION 2 136 137 /* 138 * constants for (set|get)sockopt 139 */ 140 141 #define ICMPV6_FILTER 1 142 143 /* 144 * ICMPV6 filter 145 */ 146 147 #define ICMPV6_FILTER_BLOCK 1 148 #define ICMPV6_FILTER_PASS 2 149 #define ICMPV6_FILTER_BLOCKOTHERS 3 150 #define ICMPV6_FILTER_PASSONLY 4 151 152 struct icmp6_filter { 153 __u32 data[8]; 154 }; 155 156 /* 157 * Definitions for MLDv2 158 */ 159 #define MLD2_MODE_IS_INCLUDE 1 160 #define MLD2_MODE_IS_EXCLUDE 2 161 #define MLD2_CHANGE_TO_INCLUDE 3 162 #define MLD2_CHANGE_TO_EXCLUDE 4 163 #define MLD2_ALLOW_NEW_SOURCES 5 164 #define MLD2_BLOCK_OLD_SOURCES 6 165 166 #define MLD2_ALL_MCR_INIT { { { 0xff,0x02,0,0,0,0,0,0,0,0,0,0,0,0,0,0x16 } } } 167 168 #ifdef __KERNEL__ 169 170 #include <linux/netdevice.h> 171 #include <linux/skbuff.h> 172 173 174 extern void icmpv6_send(struct sk_buff *skb, 175 int type, int code, 176 __u32 info, 177 struct net_device *dev); 178 179 extern int icmpv6_init(void); 180 extern int icmpv6_err_convert(int type, int code, 181 int *err); 182 extern void icmpv6_cleanup(void); 183 extern void icmpv6_param_prob(struct sk_buff *skb, 184 int code, int pos); 185 186 struct flowi; 187 struct in6_addr; 188 extern void icmpv6_flow_init(struct sock *sk, 189 struct flowi *fl, 190 u8 type, 191 const struct in6_addr *saddr, 192 const struct in6_addr *daddr, 193 int oif); 194 #endif 195 196 #endif 197